Internal-combustion engine with sleeve distribution.



.VAN LAMNIEREN.

APPLICATION FILED MAR.25|19'131 PatentedScpi. 12, 1916 www@ A ini INTERNALOMBUSTIN ENGN'E SLEEVE DSTRIEUTIN.

Application tiled March 25, i913.

To all wim/m z'z mayy concern Be it known that l, Wronnmvi'o's Parana VAN LAMMEREN, a subject of the Queen ot the Netherlands, residing at Warmond, near* Leiden, Netherlands, have invented certain new and useful improvements in Internal- (lonibustion Engines With Sleeve Uistrilouf tion', and I do hereby declare the following to be a full, clear, and exactdeseription of -only on one side of eaeli sleeve, oneeided f the invention, such as Will enableotliers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to let ters or figures of reference marked thereon, which itorin a part of this specification.

This invention relates to internal comliustion engines of tlie type in which the admission and exhaustare controlled 'by slid ing sleeves. In machines of this type tlfie sleeve, or sleeves when tivo are used is or are arranged inside the cylinder between the piston and the cylinder Wall. This arrange- This' is also the causeof consideralole` Wearvl of the mov-ing parts wherein the sleeves soon become leaky, and the ed Ciency of the Vnaniliine rapidly falls( This draw-back is intensiiied by the inefficient means of driving the sleeves .which tends to increase the pressure of the same against the cylinder- Walls. With .high speed piston engines, the inlet and exhaust ports sliould `"oe quickly opened and closed in order to olbtain correct admission, etc., oz thev gas nein ture. For answering these conditions sleeves may be used, which are arranged in suoli a Way as to be concentric with tine cylinder, these sleeves being reliable and Work ing in a very smooth manner. Uusually each cylinder is provided with two of suoli sleeves, ythe advantage of this arrangement losingthat with a four stroke engine the sleeve may Vloe driven by eccentries; however, a single sleeve 'may loe used tor the saine purpose, especially with tivo stroke engines.

lt lias been proved that lout few out the theoretical advantages of the sleeves are realized in practice. The known constructions are either se ineliicient with regard te the total arrangement of the engine that they cannot be considered as suitable ior practical application, or very seon after gtlie eneelileatien ef Letters atent.

Patented tiene iiz', iilild,

Serial. No. 756,722.

engine has been pnt into service tlie sleeves will show one-sided wear, resiiltiifign in looseness and loss oi eliicieney The one sided wear of the sleeves is caused by not fifi arranging or driving them in the correct manner, that is, the force driving the sleeves is not parallel 'with the direction of the sleeve-1notiong the driving ineolianinn acts Wear resulting in this case from the inertia and the friction of the sleeve, or both casesA are combined;

'llie object of the :present invention is to provide aineclianism 'for driving one or tivo sleeves, which are so arranged as to lie ooncentrie with the cylinder and to Wliieii a reciprocating motion is imparted suoli a Way 'that lateralV forces acting on 'the sleeve or the sleeves, tliose resulting 'from inertia as Well as those resulting from tl'ie driving; force, are totally avoided without tlie engine being; built up in a complicated manner er diiioult to be controlled or to lie tain to pieces. This advantage is realized by driving' the sleeves by means or two secondary acting by means of eeeentiies or the like on eacla sleeve in two points, being diarnet rieal relative to the center line .of the sleeve.

The invention will be explained here with regard to the accompanying drawing wliiole illustrates a 'ferm of execution as applied to an engine 'with two sleeves, tlie latter being concentric with tl'ie cylinder and slidu ing one Within the other.

Figure l. sliovvs tlie motor in cross Fig. 2 sliows tlie way inivliieli tlie mechanism lacts on each of ilie sleeves.`

@n the exterikiai Wall ai et the liolloiv WalledA cylinder h Works the inner and on the outer snriiace'oi tlie latter ilie elaternal sleeve c Works. lllie esterna] sleeve of the cylinder is surrounded by a nesting al bolted to the oylindeix '.llie external sleeve c slides against tlie "inner surface of the .casting el, ivliile tlie eliargfeinisztnre is'adinitt l through tlie'spac'e e, and tlie exhaust 2grasas led aivay through .the Corresponding space f. The gases flow into and ont oli tile cylinder through slots er ports 7i', o", in 'the sleeves b, c, respectively.

The sleeves 5 and e are reciproeated by means oi" two secondary' shafts 'i and 7c are ranged parallel toiie engine shait 7i and may oe driven. ir"rovi il'ie latter at liali: the speed oi the entre` lsliait lay any suitable gearing., not shown,

lil@

relative to the centerof'the sleeve.

l diainetrically 21,' Ic, is provided trics c", 52, 'cranks :,'are co'nne'cted tothe sleeve b by articulated* rods "Z, m., at the points p, g,

the center of the sleeve, 4 sleeve ois driven in a like manner by the cranks i2, c2, sleeve c` by articulated rods Z2, m2, at the with two cranks as ecceni and #,102 V, respectivelyp -V The which are placed diametrical'ly. relative to Fig. 2. The outer vvhicli 'are connected to the points 7', v'5,.Which are placed diainetrically It is obvious that there can beno force which acts' on the sleeves in a lateral vdi-` points, at which therrods are connected' to the frame of the engine the sleeves are disposed at anglesl less than .90 to the center plane perpendicular to the axis of the engine shaft;

I claim- An internal combustion engine comprising a cylinder having inlet and exhaust ports therein, independently operable concentric sleeves surrounding the cylinder for controlling said ports, a shaft on each side of the engine shaftT and articulated rods Connected to the eranksha-fts having their `upper portions vertically guided in the e'ngine frame and connected lo the sleeves at diaineti'ically opposite points disposed at angles lessthan 90 degrees to the center plane perpendicular to the axis of the engine shaft.

In testimony that I claim the foregoing as in y invention, I have signed my naine in presence of two subscribing witnesses.

,f-ajfwitiiinnusPETRUS vii LAMMEREN. 

